Billy Coen (Resident Evil Zero)

Convicted on circumstantial evidence, this ex-Marine was sentenced to death for the murder of 23 people. He escaped in a crash on route to his execution, the transport he was riding in crashed and he escaped. While on the train he meets Rebecca...

Billy is the second main character in the game after Rebecca. They work together in many situations, but Billy does have some skills that make him necessary, such as playing the Piano.